Rational Design of Efficient Defect-Based Quantum Emitters
APL Photonics(2024)
摘要
Single-photon emitters are an essential component of quantum networks, and
defects or impurities in semiconductors are a promising platform to realize
such quantum emitters. Here we present a model that encapsulates the essential
physics of coupling to phonons, which governs the behavior of real
single-photon emitters, and critically evaluate several approximations that are
commonly utilized. Emission in the telecom wavelength range is highly
desirable, but our model shows that nonradiative processes are greatly enhanced
at these low photon energies, leading to a decrease in efficiency. Our results
suggest that reducing the phonon frequency is a fruitful avenue to enhance the
efficiency.
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